某型四余度舵机的神经网络故障诊断模型

某型四余度电液舵机是飞机平尾操纵系统的关键部件，是机、电、液高度耦合的复杂系统。本文根据实际需求，将系统分为元件、部件及系统三种不同层次的故障诊断问题，运用神经网络故障诊断理论，分别建立其BP神经网络诊断模型，并介绍了神经网络故障诊断系统的实现。

Neural Networks Fault Diagnosis Model for One Four Redundant Steering

One four redundant steering engines is a crucial component of aircraft stabilizer manipulative systems,and it is a complicated system related to mechanical,electrical and hydraulic elements.Based on actual requirements,the problems of systems fault diagnosis were classified by three types: components fault diagnosis,parts fault diagnosis and systems fault diagnosis.Based on neural networks fault diagnosis theory,three types BP neural networks diagnosis models were established respectively.The realization of the fuzzy fault diagnosis system was introduced.